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["Fisyak, Yuri V" <fisyak AT bnl.gov>]

Hello Flemming and all.

1. The problem is to understand difference in outer to inner sector alignment for 2022 with Cosmic for FF and RF samples.

I see overall rotation by ~ 1mrad around Z axis for RF with respect to FF.

 

2. I have looked in Data Base for parameters of shorts.

My trouble to understand what is going on with 2022 Cosmic for FF and RF   is coming from multiple entries for West Outer Field Cage made 2024-01-25 20:2?:??.

MySQL [Calibrations_tpc]> select entryTime,beginTime,ring,resistor,MissingResistance from Geometry_tpc.tpcFieldCageShort where beginTime > '2021-10-01' and beginTime < '2022-12-31' and side=1 and cage=1 order by beginTime;

+---------------------+---------------------+-------------+------------+-------------------+

| entryTime           | beginTime           | ring        | resistor   | MissingResistance |

+---------------------+---------------------+-------------+------------+-------------------+

| 2022-03-25 20:23:58 | 2021-11-16 21:31:40 | 80.50000000 | 0.00000000 |        0.34500000 |

| 2024-01-25 20:28:58 | 2021-11-16 21:32:00 | 80.50000000 | 0.00000000 |        0.34500000 |

| 2024-01-25 20:28:58 | 2021-11-16 21:56:39 | 80.50000000 | 0.00000000 |        0.00000000 |

| 2022-03-25 20:20:42 | 2021-11-16 21:56:40 | 80.50000000 | 0.00000000 |        0.00000000 |

| 2024-01-25 20:28:58 | 2021-12-01 20:57:16 | 80.50000000 | 0.00000000 |        0.34500000 |

| 2024-01-25 20:28:58 | 2021-12-01 21:06:45 | 80.50000000 | 0.00000000 |        0.00000000 |

| 2024-01-25 20:28:58 | 2021-12-02 00:43:16 | 80.50000000 | 0.00000000 |        0.34500000 |

…

| 2024-01-25 20:29:01 | 2022-04-18 10:13:32 | 80.50000000 | 0.00000000 |        0.00000000 |

| 2024-01-25 20:29:01 | 2022-04-18 10:38:14 | 80.50000000 | 0.00000000 |        0.34500000 |

+---------------------+---------------------+-------------+------------+-------------------+

715 rows in set (0.00 sec)

 

3. I have a statement : A.Lebedev 05/10/2024 Short IFC 11/18/2021 till end of Run => 1.25 Mom missing resistor, appeared 11/01/2021

And I found in DB the difference in resistor values for my FF sample (0 and 1.5 MOhm) and RF one (1.25 MOhm).

This explains part of observed difference in alignment parameters.

 

FF

22319057  resistor:       0 : : MOhm value of added external resistor to resistor chain

22319058  resistor:       0 : : MOhm value of added external resistor to resistor chain

22319062  resistor:       0 : : MOhm value of added external resistor to resistor chain

22319073  resistor:       0 : : MOhm value of added external resistor to resistor chain

22319082  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22319090  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22319093  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22319103  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22319105  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22319107  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22319113  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22320001  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22320006  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22320007  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22320008  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

22320009  resistor:     1.5 : : MOhm value of added external resistor to resistor chain

 

FF

22336053  resistor:    1.25 :  : MOhm value of added external resistor to resistor chain

22336054  resistor:    1.25 :  : MOhm value of added external resistor to resistor chain

22336057  resistor:    1.25 :  : MOhm value of added external resistor to resistor chain

22336058  resistor:    1.25 :  : MOhm value of added external resistor to resistor chain

22336059  resistor:    1.25 :  : MOhm value of added external resistor to resistor chain

22336061  resistor:    1.25 :  : MOhm value of added external resistor to resistor chain

 

 

                                                              Yuri Fisyak

STAR                                           Phone: +1 631 344 3913
Brookhaven National Laboratory  Fax:    +1 631 344 4206
510A/1-161
http://www.star.bnl.gov/~fisyak       E-mail: fisyak AT bnl.gov

 

 

 

From: Star-tpc-l <star-tpc-l-bounces AT lists.bnl.gov> on behalf of Van Buren, Gene via Star-tpc-l <star-tpc-l AT lists.bnl.gov>
Date: Thursday, May 16, 2024 at 12:34 PM
To: witt <witt AT usna.edu>, Richard Witt via Star-tpc-l <Star-tpc-l AT lists.bnl.gov>
Subject: Re: [Star-tpc-l] TPC Meeting Today

Hi,

Here is the relevant database content for the shorted ring in the IFC west during the cosmic data taking before Run 22, along with the explanations of the database table's fields. I do not have very high confidence in the location ("ring") of the short that I selected. A reminder that a fully shorted pair of rings means that a single 2 MOhm resistor is bypassed ("missing") by the short.

-Gene

> mysql -h dbx.star.bnl.gov -P 3316 -C Geometry_tpc -e "select beginTime,ring,resistor,MissingResistance from tpcFieldCageShort where beginTime between '2021-10-01' and '2022-01-01' and side=1 and cage=0 order by beginTime asc"
+---------------------+--------------+------------+-------------------+
| beginTime           | ring         | resistor   | MissingResistance |
+---------------------+--------------+------------+-------------------+
| 2021-10-20 00:00:00 | 160.50000000 | 0.00000000 |        2.00000000 |
| 2021-11-15 21:52:00 | 160.50000000 | 3.00000000 |        2.00000000 |
| 2021-11-15 22:22:00 | 160.50000000 | 2.50000000 |        2.00000000 |
| 2021-11-15 23:07:00 | 160.50000000 | 1.50000000 |        2.00000000 |
| 2021-11-18 12:40:00 | 160.50000000 | 0.00000000 |        2.00000000 |
| 2021-11-18 21:45:00 | 160.50000000 | 1.50000000 |        2.00000000 |
| 2021-11-18 22:43:00 | 160.50000000 | 1.25000000 |        2.00000000 |
+---------------------+--------------+------------+-------------------+


> more $STAR/StDb/idl/tpcFieldCageShort.idl
/*    tpcFieldCageShort.idl
*
*  Table: tpcFieldCageShort
*
*       description: *    provide info on shorted rings in the field cages
*/


struct tpcFieldCageShort {

   float side;     /* 0 = east, 1 = west */
   float cage;     /* 0 = inner, 1 = outer */
   float ring;     /* ring location of the short (e.g. 169.5) */
   float resistor; /* MOhm value of added external resistor to resistor chain */
   float MissingResistance; /* missing resistance */

 }; 

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